Show PDB file:   
         Plain Text   HTML   (compressed file size)
by PDB,NDB,UniProt,PROSITE Code or Search Term(s)  
(-)Asym./Biol. Unit
collapse expand < >
Image Asym./Biol. Unit
Asym./Biol. Unit  (Jmol Viewer)

(-) Description

Authors :  H. J. Hecht, M. Szardenings, J. Collins, D. Schomburg
Date :  27 Mar 92  (Deposition) - 31 Oct 93  (Release) - 24 Feb 09  (Revision)
Resolution :  2.30
Chains :  Asym./Biol. Unit :  A
Keywords :  Serine Protease Inhibitor (Keyword Search: [Gene Ontology, PubMed, Web (Google))
Reference :  H. J. Hecht, M. Szardenings, J. Collins, D. Schomburg
Three-Dimensional Structure Of A Recombinant Variant Of Human Pancreatic Secretory Trypsin Inhibitor (Kazal Type).
J. Mol. Biol. V. 225 1095 1992
PubMed-ID: 1613792  |  Reference-DOI: 10.1016/0022-2836(92)90107-U
(for further references see the PDB file header)

(-) Compounds

    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606

 Structural Features

(-) Chains, Units

Asymmetric/Biological Unit A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 1HPT)

(-) Sites  (0, 0)

(no "Site" information available for 1HPT)

(-) SS Bonds  (3, 3)

Asymmetric/Biological Unit
1A:9 -A:38
2A:16 -A:35
3A:24 -A:56

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1HPT)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (3, 3)

Asymmetric/Biological Unit (3, 3)
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_011689N34SISK1_HUMANDisease (TCP)17107315AN11S

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (2, 2)

Asymmetric/Biological Unit (2, 2)
1KAZAL_2PS51465 Kazal domain profile.ISK1_HUMAN26-79  1A:3-56
2KAZAL_1PS00282 Kazal serine protease inhibitors family signature.ISK1_HUMAN39-61  1A:16-38

(-) Exons   (3, 3)

Asymmetric/Biological Unit (3, 3)
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength

(-) Sequences/Alignments

Asymmetric/Biological Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it)
Chain A from PDB  Type:PROTEIN  Length:56
 aligned with ISK1_HUMAN | P00995 from UniProtKB/Swiss-Prot  Length:79

    Alignment length:56
                                    33        43        53        63        73      
               SCOP domains d1hpta_ A: Secretory trypsin inhibitor                   SCOP domains
               CATH domains 1hptA00 A:1-56  [code=, no name defined]       CATH domains
               Pfam domains -------------------------------------------------------- Pfam domains
         Sec.struct. author Sec.struct. author
                 SAPs(SNPs) ----------S--------------------S-----------H------------ SAPs(SNPs)
                PROSITE (1) --KAZAL_2  PDB: A:3-56 UniProt: 26-79                    PROSITE (1)
                PROSITE (2) ---------------KAZAL_1  PDB: A:16-38  ------------------ PROSITE (2)
           Transcript 1 (1) 1.2   Exon 1.3b  PDB: A:7-42              -------------- Transcript 1 (1)
           Transcript 1 (2) -----------------------------------------Exon 1.4b       Transcript 1 (2)
                                    10        20        30        40        50      

   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (1, 1)

Asymmetric/Biological Unit

(-) CATH Domains  (1, 1)

Asymmetric/Biological Unit
Class: Alpha Beta (26913)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1HPT)

(-) Gene Ontology  (15, 15)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (ISK1_HUMAN | P00995)
molecular function
    GO:0004866    endopeptidase inhibitor activity    Stops, prevents or reduces the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides.
    GO:0030414    peptidase inhibitor activity    Stops, prevents or reduces the activity of a peptidase, any enzyme that catalyzes the hydrolysis peptide bonds.
    GO:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    GO:0004867    serine-type endopeptidase inhibitor activity    Stops, prevents or reduces the activity of serine-type endopeptidases, enzymes that catalyze the hydrolysis of nonterminal peptide bonds in a polypeptide chain; a serine residue (and a histidine residue) are at the active center of the enzyme.
biological process
    GO:0090281    negative regulation of calcium ion import    Any process that decreases the rate, frequency, or extent of the directed movement of calcium ions into a cell or organelle.
    GO:0010751    negative regulation of nitric oxide mediated signal transduction    Any process that decreases the rate, frequency or extent of nitric oxide mediated signal transduction. Nitric oxide mediated signal transduction is a series of molecular signals mediated by the detection of nitric oxide (NO).
    GO:0010466    negative regulation of peptidase activity    Any process that stops or reduces the rate of peptidase activity, the hydrolysis of peptide bonds within proteins.
    GO:0050732    negative regulation of peptidyl-tyrosine phosphorylation    Any process that stops, prevents, or reduces the frequency, rate or extent of the phosphorylation of peptidyl-tyrosine.
    GO:1900004    negative regulation of serine-type endopeptidase activity    Any process that stops, prevents or reduces the frequency, rate or extent of serine-type endopeptidase activity.
    GO:0060046    regulation of acrosome reaction    Any process that modulates the frequency, rate or extent of the acrosome reaction.
    GO:2001256    regulation of store-operated calcium entry    Any process that modulates the frequency, rate or extent of store-operated calcium entry.
cellular component
    GO:0001669    acrosomal vesicle    A structure in the head of a spermatozoon that contains acid hydrolases, and is concerned with the breakdown of the outer membrane of the ovum during fertilization. It lies just beneath the plasma membrane and is derived from the lysosome.
    GO:0070062    extracellular exosome    A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
    GO:0005576    extracellular region    The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
    GO:0005615    extracellular space    That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.


(-) Interactive Views

Asymmetric/Biological Unit
  Complete Structure
    Jena3D(integrated viewing of ligand, site, SAP, PROSITE, SCOP information)
    WebMol | AstexViewer[tm]@PDBe
(Java Applets, require no local installation except for Java; loading may be slow)
(Java WebStart application, automatic local installation, requires Java; full application with system access!)
(require local installation)
    Molscript (VRML)
(requires installation of a VRML viewer; select preferred view via VRML and generate a mono or stereo PDF format file)
  Ligands, Modified Residues, Ions
(no "Ligands, Modified Residues, Ions" information available for 1hpt)
(no "Sites" information available for 1hpt)
  Cis Peptide Bonds
(no "Cis Peptide Bonds" information available for 1hpt)

(-) Still Images

  protein: cartoon or spacefill or dots and stick; nucleic acid: cartoon and stick; ligands: spacefill; active site: stick
  protein, nucleic acid: cartoon; ligands: spacefill; active site: ball and stick
  spacefill, water
  ribbon, SS bonds, labeling

 Databases and Analysis Tools

(-) Databases

Access by PDB/NDB ID
    Family and Domain InformationProDom | SYSTERS
    General Structural InformationGlycoscienceDB | MMDB | NDB | OCA | PDB | PDBe | PDBj | PDBsum | PDBWiki | PQS | PROTEOPEDIA
    Orientation in MembranesOPM
    Protein SurfaceSURFACE
    Secondary StructureDSSP (structure derived) | HSSP (homology derived)
    Structural GenomicsGeneCensus
    Structural NeighboursCE | VAST
    Structure ClassificationCATH | Dali | SCOP
    Validation and Original DataBMRB Data View | BMRB Restraints Grid | EDS | PROCHECK | RECOORD | WHAT_CHECK
Access by UniProt ID/Accession number
  ISK1_HUMAN | P00995
    Comparative Protein Structure ModelsModBase
    Genomic InformationEnsembl
    Protein-protein InteractionDIP
    Sequence, Family and Domain InformationInterPro | Pfam | SMART | UniProtKB/SwissProt
Access by Enzyme Classificator   (EC Number)
  (no 'Enzyme Classificator' available)
    General Enzyme InformationBRENDA | EC-PDB | Enzyme | IntEnz
    PathwayKEGG | MetaCyc
Access by Disease Identifier   (MIM ID)
    Disease InformationOMIM
Access by GenAge ID
  (no 'GenAge ID' available)
    Age Related InformationGenAge

(-) Analysis Tools

Access by PDB/NDB ID
    Domain InformationXDom
    Interatomic Contacts of Structural UnitsCSU
    Ligand-protein ContactsLPC
    Protein CavitiescastP
    Sequence and Secondary StructurePDBCartoon
    Structure AlignmentSTRAP(Java WebStart application, automatic local installation, requires Java; full application with system access!)
    Structure and Sequence BrowserSTING
Access by UniProt ID/Accession number
  ISK1_HUMAN | P00995
    Protein Disorder PredictionDisEMBL | FoldIndex | GLOBPLOT (for more information see DisProt)

 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

        ISK1_HUMAN | P009951cgi 1cgj

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 1HPT)